Pith Number

pith:OJ7E6FKF

pith:2019:OJ7E6FKFJTTJGUQDFPMFU7C7OB

not attested not anchored not stored refs pending

Dynamic Mean-Variance Portfolio Optimisation

Xiang Meng

arxiv:1907.03093 v1 · 2019-07-06 · q-fin.PM · math.OC · q-fin.MF

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OJ7E6FKFJTTJGUQDFPMFU7C7OB}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-17T23:41:18.952633Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

727e4f15454ce69352032bd85a7c5f70483458ea4a0ba5b03094e5c5c82bee15

Aliases

arxiv: 1907.03093 · arxiv_version: 1907.03093v1 · doi: 10.48550/arxiv.1907.03093 · pith_short_12: OJ7E6FKFJTTJ · pith_short_16: OJ7E6FKFJTTJGUQD · pith_short_8: OJ7E6FKF

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/OJ7E6FKFJTTJGUQDFPMFU7C7OB \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 727e4f15454ce69352032bd85a7c5f70483458ea4a0ba5b03094e5c5c82bee15

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cf9840dec5d30bfbcda7e8778393dc1c482cc3c018ef47b04e483b6c51f2d621",
    "cross_cats_sorted": [
      "math.OC",
      "q-fin.MF"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-fin.PM",
    "submitted_at": "2019-07-06T07:49:30Z",
    "title_canon_sha256": "a8c6d9493a804c4fe952242b3e0f103abfc82481dd69453ca927c871d8737c51"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.03093",
    "kind": "arxiv",
    "version": 1
  }
}